Alexandra S Klein1,2, Nadine Gogolla3. 1. Circuits for Emotion Research Group, Max Planck Institute of Neurobiology, Martinsried, Germany. 2. International Max Planck Research School for Molecular Life Sciences, Munich, Germany. 3. Circuits for Emotion Research Group, Max Planck Institute of Neurobiology, Martinsried, Germany. ngogolla@neuro.mpg.de.